Spring-pressure button



L. FOU LETIER SPR ING PRESSURE BUTTONv Filed May 14, 1926 /N VEN T02 Lou/S POULE 77E TTORNE YS Patented @et i6, i933.

Unirse stares i ingaan PATENT ortica,

'Louis roonnrrna, or ennnonnn, rennen.

sentirei-renewals BUTTON.

Appiieaiion area nay 1e, reuze, serial no. 109,134, and in France July 7, V1525.V

My invention relates to a spring 1pressure button which assures a reliable fastening, while its two component parts may be readily separated and without strain upon the attaching` means. y

The appended drawings show by way ot example various forms ot pressure buttons in accordance with the invention.

Fig. 1 is a cross section oit' the cup-shaped part alone, and,v

Fig. Q 'is the corresponding plan view.

Fig. 3 closingposition.

Figs. a and 5 show the method ot opening the button. l

Figs. 6 and 7 show a modilioation respectively in the closed position and in the position preliminary to the opening.

rl'he said pressure button comprises two principal parts which are attach-ed to the.

respective pieces to be fastened together, follows:

1. A cup-shaped part which is apertured` at the centre and contains a spring` l.

2. A button 2 which comprises a circular recess 3 in the lower part.

ylhe said cup-shaped part may consist for example ot two plates which are attached together and are :tastenedto the textile fabric G. A third plate 7 is also attached below` the plate 5, and the spring l whose form is variable is disposed between the plates 4 and 5. The shape oit said spring is indicated solely by way ot exaniple,land it may have any other suitable shape and may be made in one or two pieces.

Upon the shank of the button 2 is loosely slidable a ring 8 which is beveled at 9 adj acent the head or' the button, and is slightly ,fgrooved onthe periphery at 10. The groove is not essential. since the pressure ot' the spring may sutlice to Ydraw the ring'.

` The said ring has a diameter equal to that ot the head of the button, or a somewhat larger diameter.

rihe ,Operation is as follows:

To button the device, the cupshaped part y is placed upon the button, and a slight pressure is given in order to bring the spring` 1" under the head of the button whose lower edge forms an abutment (Fing.

To unbutton the device, I commence by pressing` more strongly upon the cup-shaped part. The spring l meets with the beveled edge 9 ot the ring,` 8 and moves aside, thus en# tering the groove 10 (Fig. l) 5 the device is is a section ot the button in theV upon the lower ramp.

then drawn up, so that the ring'8 will slide along the body ot the button 2 and will be engaged in the recess 3 (Fig. 5). rlhe springl can thus be readily disengaged from the `groove l0 and will slide around the headv ot' the button as the two fastened buttoned parts are further separated. i' i Obviously, the button and its cup-shaped aart mayhave widely (littering shapes, for instance round, square, polygonal and the` like, without departing` from the principle ot the invention.

. The two parts of the button may he tastened in any suitable manner to the pieces to be buttoned together, by means ot claws, eyelets, screws, taclrs Aand the like.

- ln the modilication shown in Figs. G and 7, the ring 8 comprises in addition to the bevel 9 an oppositely situated bevel ll formed on its lower edge, so as to have a double taper and without peripheral groove.

' ln these conditions, in the closed position (Fig. 6) the parts have the saine relative positions as betere, but to open the device, when the cup is pressed upon, the spring' will slide upon the upper ramp ot the ring,` and thence rlhe device is then drawn up and the ring 8 engages the recess 3, and the spring,- proceeds at once upon the bevel ll (Fig. 7) the spring` then slides upon the bevel ll and upon the head. ot the button.

In all cases, it will be noted that in the closing position the device will be securely fastened, since the spring abuts against the under part ot the button head, Vand cannot go beyond it whatever may be the .traction exercised. Y

Thering 8 may have a triangular, rounc et' or other cross section, and it may be open and flexible. or closed.

(lne has already proposed spring` pressure buttons ot' a kind similar to those which have been described above, also comprising, on the one hand. a button having a shank provided with a bulged head and a sleeve sliding;` along this shank, and on the other hand a movable cup provided with a recess adapted to slide over the said button and stopping,- means adaptedk to be resiliently or yielding'ly clamped about the said shank, the said sleeve being adapted to cooperate with the said stopping means so as to keep the saine apart Jfor the purpose of unbuttoningj. l do not claim this combination in a general manner. However in the known devices ot this kind, the under part of the head was not recessed for llo sleeve could not join the periphery of the head without leaving a space 'in which the 5 springstopping means Were liable to engage themselves when unbuttoning takes place,

thereby preventing the latter from being' on the said shank, said-ring comprising;r adeasily effected.

Having,- thus described my apparatus, what I elairn as new therein, and my own invention, is Y v In a spring pressure button, the combination of a cup-shaped member comprising an aperture formed at its centre and adaptedto be fastened to one of the t-Wo pieces to be buttoned together, a spring disposed' in said cup-shaped member, a stud providedwith a head and a shank,adapted to be fastened to f* serving as an abutment for Contact with the said spring,a ring Whose diameter at least equals that ot' the said head and is slidable jacent the head a beveled edge adapted to engage the said recess in the head and thus to cause the said spring` to expand ywhereby the latter may slide upon the said head When the said-cup-shaped memberis drawn upon the same and an annular groove formed in the periphery of said ring.

In testimony whereof I have hereunto a'ffixed my signature.

LOUIS FOULETIER. 

